From: Wu Fengguang <fengguang.wu@intel.com>
To: <linux-fsdevel@vger.kernel.org>
Cc: Jan Kara <jack@suse.cz>, Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@infradead.org>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 6/7] writeback: requeue_io_wait() on blocked inode
Date: Thu, 20 Oct 2011 23:22:46 +0800 [thread overview]
Message-ID: <20111020153706.397951190@intel.com> (raw)
In-Reply-To: 20111020152240.751936131@intel.com
[-- Attachment #1: writeback-remove-redirty-blocked.patch --]
[-- Type: text/plain, Size: 1347 bytes --]
Use requeue_io_wait() if inode is somehow blocked.
CC: Jan Kara <jack@suse.cz>
CC: Dave Chinner <david@fromorbit.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
fs/fs-writeback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-next.orig/fs/fs-writeback.c 2011-10-20 22:42:25.000000000 +0800
+++ linux-next/fs/fs-writeback.c 2011-10-20 22:43:42.000000000 +0800
@@ -471,25 +471,25 @@ writeback_single_inode(struct inode *ino
/*
* slice used up: queue for next turn
*/
requeue_io(inode, wb);
} else {
/*
* Writeback blocked by something other than
* congestion. Delay the inode for some time to
* avoid spinning on the CPU (100% iowait)
* retrying writeback of the dirty page/inode
* that cannot be performed immediately.
*/
- redirty_tail(inode, wb);
+ requeue_io_wait(inode, wb);
}
} else if (inode->i_state & I_DIRTY) {
/*
* Filesystems can dirty the inode during writeback
* operations, such as delayed allocation during
* submission or metadata updates after data IO
* completion.
*
* For the latter case it is very important to give
* the inode another turn on b_more_io instead of
* redirtying it. Constantly moving dirtied_when
* forward will prevent us from ever writing out
next prev parent reply other threads:[~2011-10-20 15:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-20 15:22 [PATCH 0/7] writeback: avoid touching dirtied_when on blocked inodes Wu Fengguang
2011-10-20 15:22 ` [PATCH 1/7] writeback: introduce queue b_more_io_wait Wu Fengguang
2011-10-20 23:23 ` Jan Kara
2011-10-20 15:22 ` [PATCH 2/7] writeback: avoid redirtying when ->write_inode failed to clear I_DIRTY Wu Fengguang
2011-10-20 23:24 ` Jan Kara
2011-10-20 15:22 ` [PATCH 3/7] writeback: update wb->last_active on written pages/inodes Wu Fengguang
2011-10-20 15:22 ` [PATCH 4/7] writeback: Retry kupdate work early if we need to retry some inode writeback Wu Fengguang
2011-10-20 15:22 ` [PATCH 5/7] writeback: requeue_io_wait() on pages_skipped inode Wu Fengguang
2011-10-20 23:25 ` Jan Kara
2011-10-20 15:22 ` Wu Fengguang [this message]
2011-10-20 23:31 ` [PATCH 6/7] writeback: requeue_io_wait() on blocked inode Jan Kara
2011-10-20 15:22 ` [PATCH 7/7] writeback: requeue_io_wait() when failed to grab superblock Wu Fengguang
2011-10-20 23:25 ` Jan Kara
2011-10-20 23:21 ` [PATCH 0/7] writeback: avoid touching dirtied_when on blocked inodes Jan Kara
2011-10-21 10:40 ` Wu Fengguang
2011-10-21 19:54 ` Jan Kara
2011-10-22 3:11 ` Wu Fengguang
2011-10-22 5:38 ` Wu Fengguang
2011-10-22 6:59 ` Wu Fengguang
2011-10-22 7:07 ` Wu Fengguang
2011-10-22 7:46 ` Wu Fengguang
2011-10-22 4:46 ` Wu Fengguang
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